Device for regulating and controlling contact and interaction between pile and earth

Abstract

The invention discloses a device for regulating and controlling contact and interaction between a pile and earth. The device comprises a negative pressure pump, a grouting pump and a pile body embedded in a selected region. The device is structurally characterized in that a main negative pressure pipeline and a main grouting pipeline are arranged in the pile body or on the surface of the pile body, wherein the main negative pressure pipeline is connected with the negative pressure pump, and the main grouting pipeline is connected with the grouting pump; the device is further provided with a plurality of branch negative pressure pipelines distributed at intervals and a plurality of branch grouting pipelines distributed at intervals, wherein the branch negative pressure pipelines are communicated with the main negative pressure pipeline, and the branch grouting pipelines are communicated with the main grouting pipeline; a valve can be arranged in each branch grouting pipeline, and a plug can be arranged in the main grouting pipeline; deformation sensors and stress sensors can be further arranged in the pile body, wherein the deformation sensors and the stress sensors are connected with a monitoring station. The device has the advantages that opening and closing of the contact surface between the pile and the earth can be flexibly controlled, the stress condition of the end of the pile can be effectively controlled, stress and deformation of the pile body can be flexibly adjusted, and the device can effectively cooperate with the pile and the earth to work together.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a device for regulating pile-soil contact and interaction. Background technique [0002] In engineering practice, we often encounter pile foundations in foundations such as deep silt, loose muddy soil, and newly filled soil. Due to post-construction settlement or compression deformation of the soil between piles, the soil drives the pile body to move downward, resulting in pile foundation The problem of negative friction leads to the concentrated load of the pile body; when the problem is serious, it will lead to uneven settlement of the pile foundation, and even engineering safety accidents such as pile foundation failure. [0003] At present, there is still a lack of technical solutions to solve the problem of piles being overloaded due to negative friction. Usually, the pile body is broken and the building is tilted, and the treatment is started. Methods s...

AI Technical Summary

Problems solved by technology

However, at present, the lower sleeve is mostly used to recover the pile foundation, and the pile is pulled up after cutting off the contact between the pile and the soil. This is easy to cause difficult and inefficient pile extraction due to the difficulty of lowering the sleeve.

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